// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "ui/base/ui_base_paths.h"

#include "base/command_line.h"
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/logging.h"
#include "base/path_service.h"
#include "build/build_config.h"

#if defined(OS_ANDROID)
#include "base/android/path_utils.h"
#endif

namespace ui {

bool PathProvider(int key, base::FilePath* result)
{
    // Assume that we will not need to create the directory if it does not exist.
    // This flag can be set to true for the cases where we want to create it.
    bool create_dir = false;

    base::FilePath cur;
    switch (key) {
    case DIR_LOCALES:
        if (!PathService::Get(base::DIR_MODULE, &cur))
            return false;
#if defined(OS_MACOSX)
        // On Mac, locale files are in Contents/Resources, a sibling of the
        // App dir.
        cur = cur.DirName();
        cur = cur.Append(FILE_PATH_LITERAL("Resources"));
#elif defined(OS_ANDROID)
        if (!PathService::Get(DIR_RESOURCE_PAKS_ANDROID, &cur))
            return false;
#else
        cur = cur.Append(FILE_PATH_LITERAL("locales"));
#endif
        create_dir = true;
        break;
    // The following are only valid in the development environment, and
    // will fail if executed from an installed executable (because the
    // generated path won't exist).
    case UI_DIR_TEST_DATA:
        if (!PathService::Get(base::DIR_SOURCE_ROOT, &cur))
            return false;
        cur = cur.Append(FILE_PATH_LITERAL("ui"));
        cur = cur.Append(FILE_PATH_LITERAL("base"));
        cur = cur.Append(FILE_PATH_LITERAL("test"));
        cur = cur.Append(FILE_PATH_LITERAL("data"));
        if (!base::PathExists(cur)) // we don't want to create this
            return false;
        break;
#if defined(OS_ANDROID)
    case DIR_RESOURCE_PAKS_ANDROID:
        if (!PathService::Get(base::DIR_ANDROID_APP_DATA, &cur))
            return false;
        cur = cur.Append(FILE_PATH_LITERAL("paks"));
        break;
#endif
    case UI_TEST_PAK:
#if defined(OS_ANDROID)
        if (!PathService::Get(ui::DIR_RESOURCE_PAKS_ANDROID, &cur))
            return false;
#else
        if (!PathService::Get(base::DIR_MODULE, &cur))
            return false;
#endif
        cur = cur.AppendASCII("ui_test.pak");
        break;
    default:
        return false;
    }

    if (create_dir && !base::PathExists(cur) && !base::CreateDirectory(cur))
        return false;

    *result = cur;
    return true;
}

// This cannot be done as a static initializer sadly since Visual Studio will
// eliminate this object file if there is no direct entry point into it.
void RegisterPathProvider()
{
    PathService::RegisterProvider(PathProvider, PATH_START, PATH_END);
}

} // namespace ui
